On 5/31/19 11:07 AM, Simon Horman wrote:
On Tue, May 21, 2019 at 09:32:26AM +0200, Varad Gautam wrote:
From: David Woodhouse <dwmw@xxxxxxxxxxxx>
Unlike Linux which creates a full identity mapping, Xen only maps those
segments which are explicitly requested. Therefore, xen_kexec_load()
silently adds in a segment from zero to 1MiB to ensure that VGA memory
and other things are accessible.
However, this doesn't work when there are already segments to be loaded
under 1MiB, because the overlap causes Xen to reject the kexec_load.
Be more careful and just infill the ranges which are required instead
of naïvely adding a full 0-1MiB segment at the end.
Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
This patch appears to be present in the kexec-tools tree as:
eff53089523c xen: Avoid overlapping segments in low memory
Ah, please ignore this one. I had an earlier checkout.
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